113031020621 has 2 divisors, whose sum is σ = 113031020622. Its totient is φ = 113031020620.

The previous prime is 113031020603. The next prime is 113031020677. The reversal of 113031020621 is 126020130311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109210420900 + 3820599721 = 330470^2 + 61811^2 .

It is an emirp because it is prime and its reverse (126020130311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113031020621 - 2²² = 113026826317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 113031020593 and 113031020602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113031020321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56515510310 + 56515510311.

It is an arithmetic number, because the mean of its divisors is an integer number (56515510311).

Almost surely, 2^113031020621 is an apocalyptic number.

It is an amenable number.

113031020621 is a deficient number, since it is larger than the sum of its proper divisors (1).

113031020621 is an equidigital number, since it uses as much as digits as its factorization.

113031020621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 113031020621 its reverse (126020130311), we get a palindrome (239051150932).

The spelling of 113031020621 in words is "one hundred thirteen billion, thirty-one million, twenty thousand, six hundred twenty-one".